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https://www.readbyqxmd.com/read/29223334/expression-of-phytoglobin-affects-nitric-oxide-metabolism-and-energy-state-of-barley-plants-exposed-to-anoxia
#1
Devin W Cochrane, Jay K Shah, Kim H Hebelstrup, Abir U Igamberdiev
Class 1 plant hemoglobins (phytoglobins) are upregulated during low-oxygen stress and participate in metabolism and cell signaling via modulation of the levels of nitric oxide (NO). We studied the effects of overexpression and knockdown of the class 1 phytoglobin gene in barley (Hordeum vulgare L.) under low-oxygen stress. The overexpression of phytoglobin reduced the amount of NO released, while knockdown significantly stimulated NO emission. It has previously been shown that NO inhibits aconitase activity, so decreased aconitase activity in knockdown plants acts as a biomarker for high internal NO levels...
December 2017: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/29218074/autophagy-in-endometriosis
#2
REVIEW
Hui-Li Yang, Jie Mei, Kai-Kai Chang, Wen-Jie Zhou, Li-Qing Huang, Ming-Qing Li
Endometriosis (EMS) is a common gynecologic disease that causes chronic pelvic pain, dysmenorrhea, and infertility in women. The doctrine of menstruation back flow planting and defects in the immune system are well known and widely accepted. In recent years, increasing studies have been focused on the role of autophagy in EMS, and have shown that autophagy plays a vital role in EMS. Autophagy, which is known as the non-apoptotic form of programmed cell death induced by a large number of intracellular/extracellular stimuli, is the major cellular pathway for the degradation of long-lived proteins and cytoplasmic organelles in eukaryotic cells...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/29212172/safflor-yellow-b-reduces-hypoxia-mediated-vasoconstriction-by-regulating-endothelial-micro-ribonucleic-acid-nitric-oxide-synthase-signaling
#3
Chaoyun Wang, Ying Yang, Miao Li, Xin Liu, Qiaoyun Wang, Wenyu Xin, Hongliu Sun, Qingyin Zheng
Hypoxia-induced generation of vasoconstrictors reduces cerebral blood flow (CBF) while nitric oxide (NO) synthase (NOS) and microRNAs (miRNA) in endothelial cells (ECs) suppress vasoconstriction. Safflor yellow B (SYB), a natural plant compound, previously attenuated angiotensin II-mediated injury of ECs and maintained endothelial function. This study investigated the putative involvement of NOS and miRNAs in SYB-mediated resistance to hypoxia-induced vasoconstriction. In vivo, chronic hypoxia was induced in rats, and SYB was administered intravenously...
November 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/29208171/ecological-and-biological-studies-on-five-lined-skink-trachylepis-mabuya-quinquetaeniata-inhabiting-two-different-habitats-in-egypt
#4
Mohamed A M Kadry, Hanan R H Mohamed, Mohamed Hosney
This study was carried out to study the diet type, genetic, morphometric and histological variations between two natural populations of Trachylepis quinquetaeniata inhabiting Abu-Rawash, Embaba, North Giza and Garfas-Senoures, El-Faiyum habitats. In this study, morphometric examination showed that Trachylepis quinquetaeniata is a typically ground-dwelling Skink and seems to be frequently associated with grass and below shrubs. Geographic variation in sexual size dimorphism (SSD) and head size dimorphism (HSD) with greater dimensions in Garfas-Senoures, El-Faiyum compared with Abu-Rawash, Embaba, North Giza might be correlated with spatial food availability and abundance or micro-evolutionary change or phenotypic plasticity...
November 30, 2017: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/29201033/cell-based-phenotyping-reveals-qtl-for-membrane-potential-maintenance-associated-with-hypoxia-and-salinity-stress-tolerance-in-barley
#5
Muhammad B Gill, Fanrong Zeng, Lana Shabala, Guoping Zhang, Yun Fan, Sergey Shabala, Meixue Zhou
Waterlogging and salinity are two major abiotic stresses that hamper crop production world-wide resulting in multibillion losses. Plant abiotic stress tolerance is conferred by many interrelated mechanisms. Amongst these, the cell's ability to maintain membrane potential (MP) is considered to be amongst the most crucial traits, a positive relationship between the ability of plants to maintain highly negative MP and its tolerance to both salinity and waterlogging stress. However, no attempts have been made to identify quantitative trait loci (QTL) conferring this trait...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29145496/insights-into-soybean-transcriptome-reconfiguration-under-hypoxic-stress-functional-regulatory-structural-and-compositional-characterization
#6
Thiago J Nakayama, Fabiana A Rodrigues, Norman Neumaier, Juliana Marcolino-Gomes, Hugo B C Molinari, Thaís R Santiago, Eduardo F Formighieri, Marcos F Basso, José R B Farias, Beatriz M Emygdio, Ana C B de Oliveira, Ângela D Campos, Aluízio Borém, Frank G Harmon, Liliane M Mertz-Henning, Alexandre L Nepomuceno
Soybean (Glycine max) is one of the major crops worldwide and flooding stress affects the production and expansion of cultivated areas. Oxygen is essential for mitochondrial aerobic respiration to supply the energy demand of plant cells. Because oxygen diffusion in water is 10,000 times lower than in air, partial (hypoxic) or total (anoxic) oxygen deficiency is important component of flooding. Even when oxygen is externally available, oxygen deficiency frequently occurs in bulky, dense or metabolically active tissues such as phloem, meristems, seeds, and fruits...
2017: PloS One
https://www.readbyqxmd.com/read/29133150/structure-and-function-of-per-arnt-sim-domains-and-their-possible-role-in-the-life-cycle-biology-of-trypanosoma-cruzi
#7
REVIEW
Maura Rojas-Pirela, Daniel J Rigden, Paul A Michels, Ana J Cáceres, Juan Luis Concepción, Wilfredo Quiñones
Per-ARNT-Sim (PAS) domains of proteins play important roles as modules for signalling and cellular regulation processes in widely diverse organisms such as Archaea, Bacteria, protists, plants, yeasts, insects and vertebrates. These domains are present in many proteins where they are used as sensors of stimuli and modules for protein interactions. Characteristically, they can bind a broad spectrum of molecules. Such binding causes the domain to trigger a specific cellular response or to make the protein containing the domain susceptible to responding to additional physical or chemical signals...
November 10, 2017: Molecular and Biochemical Parasitology
https://www.readbyqxmd.com/read/29110726/coix-lacryma-jobi-var-ma-yuen-stapf-sprout-extract-has-anti-metastatic-activity-in-colon-cancer-cells-in-vitro
#8
Eun Suk Son, Young Ock Kim, Chun Geon Park, Kyung Hun Park, Sung Hwan Jeong, Jeong-Woong Park, Se-Hee Kim
BACKGROUND: Coix lacryma-jobi var. ma-yuen (Rom.Caill.) Stapf has been used in China as an herbal medicine. Many studies of this plant have reported anti-proliferative and apoptotic activities on human cancer cell lines. Therefore, this study of the anti-metastatic effect of Coix lacryma-jobi var. ma-yuen Stapf sprout extract (CLSE) in colorectal cancer cells may provide a scientific basis for exploring anti-cancer effects of edible crops. METHODS: To evaluate the effect of CLSE on cell proliferation and signaling, we performed a Cell Counting Kit-8 (CCK-8) assay in HCT116 cells and used western blot analysis...
November 6, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/29093768/draft-genome-sequence-of-marinobacterium-rhizophilum-cl-yj9-t-dsm-18822-t-isolated-from-the-rhizosphere-of-the-coastal-tidal-flat-plant-suaeda-japonica
#9
Dong Han Choi, Gwang Ii Jang, Alla Lapidus, Alex Copeland, T B K Reddy, Supratim Mukherjee, Marcel Huntemann, Neha Varghese, Natalia Ivanova, Manoj Pillay, Brian J Tindall, Markus Göker, Tanja Woyke, Hans-Peter Klenk, Nikos C Kyrpides, Byung Cheol Cho
The genus Marinobacterium belongs to the family Alteromonadaceae within the class Gammaproteobacteria and was reported in 1997. Currently the genus Marinobacterium contains 16 species. Marinobacterium rhizophilum CL-YJ9(T) was isolated from sediment associated with the roots of a plant growing in a tidal flat of Youngjong Island, Korea. The genome of the strain CL-YJ9(T) was sequenced through the Genomic Encyclopedia of Type Strains, Phase I: KMG project. Here we report the main features of the draft genome of the strain...
2017: Standards in Genomic Sciences
https://www.readbyqxmd.com/read/29046352/the-lignan-manassantin-is-a-potent-and-specific-inhibitor-of-mitochondrial-complex-i-and-bioenergetic-activity-in-mammals
#10
Yibao Ma, Hae-Ki Min, Unsong Oh, Adam M Hawkridge, Wei Wang, Ahmed A Mohsin, Qun Chen, Arun Sanyal, Edward J Lesnefsky, Xianjun Fang
Dineolignans manassantin A and B from the plant Saururus cernuus are used in traditional medicine to manage a wide range of ailments such as edema, jaundice, and gonorrhea. Cell-based studies have identified several molecular target candidates of manassantin including NF-kappaB, MAPK, STAT3 and hypoxia-inducible factor 1 alpha (HIF-1alpha). It is unclear whether or how these structurally diverse proteins or pathways mediate any of the medical benefits of manassantin in vivo. Moreover, it has been recently reported that manassantin causes developmental arrest in zebrafish by inhibiting the mitochondrial complex I, but it is unknown whether manassantin inhibits mitochondrial respiration in intact mammalian cells and live animals...
October 18, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29033957/reacquisition-of-new-meristematic-sites-determines-the-development-of-a-new-organ-the-cecidomyiidae-gall-on-copaifera-langsdorffii-desf-fabaceae
#11
Renê G S Carneiro, Rosy M S Isaias, Ana S F P Moreira, Denis C Oliveira
The development of gall shapes has been attributed to the feeding behavior of the galling insects and how the host tissues react to galling stimuli, which ultimately culminate in a variable set of structural responses. A superhost of galling herbivores, Copaifera langsdorffii, hosts a bizarre "horn-shaped" leaflet gall morphotype induced by an unidentified species of Diptera: Cecidomyiidae. By studying the development of this gall morphotype under the anatomical and physiological perspectives, we demonstrate the symptoms of the Cecidomyiidae manipulation over plant tissues, toward the cell redifferentiation and tissue neoformation...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29033328/the-cys-arg-n-end-rule-pathway-is-a-general-sensor-of-abiotic-stress-in-flowering-plants
#12
Jorge Vicente, Guillermina M Mendiondo, Mahsa Movahedi, Marta Peirats-Llobet, Yu-Ting Juan, Yu-Yen Shen, Charlene Dambire, Katherine Smart, Pedro L Rodriguez, Yee-Yung Charng, Julie E Gray, Michael J Holdsworth
Abiotic stresses impact negatively on plant growth, profoundly affecting yield and quality of crops. Although much is known about plant responses, very little is understood at the molecular level about the initial sensing of environmental stress. In plants, hypoxia (low oxygen, which occurs during flooding) is directly sensed by the Cys-Arg/N-end rule pathway of ubiquitin-mediated proteolysis, through oxygen-dependent degradation of group VII Ethylene Response Factor transcription factors (ERFVIIs) via amino-terminal (Nt-) cysteine [1, 2]...
October 23, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28983604/sanggenon%C3%A2-c-protects-against-cardiomyocyte-hypoxia-injury-by-increasing-autophagy
#13
Yang Gu, Lu Gao, Yu Chen, Zhuo Xu, Kun Yu, Dongying Zhang, Gang Zhang, Xiwen Zhang
Sanggenon C is isolated from Morus alba, a plant that has been used for anti‑inflammatory purposes in Oriental medicine. Little is known about the effect of Sanggenon C on cardiomyocyte hypoxia injury. This study, using H9c2 rat cardiomyoblasts, was designed to determine the effects of Sanggenon C on cardiomyocyte hypoxia injury. Inflammatory cytokine levels were measured by reverse transcription‑polymerase chain reaction, reactive oxygen species were measured by 2',7'‑dichlorofluorescin diacetate fluorescent probe, autophagy was detected using the LC3II/I ratio and cell apoptosis was detected by TUNEL staining...
December 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28981257/bacillus-anthracis-prolyl-4-hydroxylase-interacts-with-and-modifies-elongation-factor-tu
#14
Nicholas J Schnicker, Mortezaali Razzaghi, Sanjukta Guha Thakurta, Srinivas Chakravarthy, Mishtu Dey
Prolyl hydroxylation is a very common post-translational modification and plays many roles in eukaryotes such as collagen stabilization, hypoxia sensing, and controlling protein transcription and translation. There is a growing body of evidence that suggests that prokaryotes contain prolyl 4-hydroxylases (P4Hs) homologous to the hypoxia-inducible factor (HIF) prolyl hydroxylase domain (PHD) enzymes that act on elongation factor Tu (EFTu) and are likely involved in the regulation of bacterial translation. Recent biochemical and structural studies with a PHD from Pseudomonas putida (PPHD) determined that it forms a complex with EFTu and hydroxylates a prolyl residue of EFTu...
October 31, 2017: Biochemistry
https://www.readbyqxmd.com/read/28961169/anti-inflammatory-thioredoxin-family-proteins-for-medicare-healthcare-and-aging-care
#15
REVIEW
Junji Yodoi, Yoshiyuki Matsuo, Hai Tian, Hiroshi Masutani, Takashi Inamoto
Human thioredoxin (TRX) is a 12-kDa protein with redox-active dithiol in the active site -Cys-Gly-Pro-Cys-, which is induced by biological stress due to oxidative damage, metabolic dysfunction, chemicals, infection/inflammation, irradiation, or hypoxia/ischemia-reperfusion. Our research has demonstrated that exogenous TRX is effective in a wide variety of inflammatory diseases, including viral pneumonia, acute lung injury, gastric injury, and dermatitis, as well as in the prevention and amelioration of food allergies...
September 29, 2017: Nutrients
https://www.readbyqxmd.com/read/28895799/protective-effects-of-bellidifolin-in-hypoxia-induced-in-pheochromocytoma-cells-pc12-and-underlying-mechanisms
#16
Zhi-Ying Zhao, Yang-Yang Gao, Li Gao, Ming Zhang, He Wang, Chun-Hong Zhang
Bellidifolin, a xanthone compound derived from plants of Gentiana species, is known to exert a variety of pharmacological activities including anti-oxidation, anti-inflammatory and antitumor actions as well as a protective effect on cerebral ischemic nerve injury. The aim of this study was to examine the protective effects of bellidifolin on nerve injury produced by hypoxia and possible underlying mechanisms using pheochromocytoma cells (PC12). Data showed that the viability of PC12 cells subjected to hypoxia resulted in a significant decrease; however; pretreatment with certain concentrations of bellidifolin (20 or 40 μmol/L) prior to hypoxia significantly increased the survival rate...
September 12, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28886525/perillyl-alcohol-protects-human-renal-tubular-epithelial-cells-from-hypoxia-reoxygenation-injury-via-inhibition-of-ros-endoplasmic-reticulum-stress-and-activation-of-pi3k-akt-enos-pathway
#17
Yixiao Xu, Wantie Wang, Keke Jin, Qifan Zhu, Hongzhou Lin, Minye Xie, Dexuan Wang
Ischemia/reperfusion (I/R) injury plays an essential role in renal transplantation, and represents a crucial risk factor for allograft dysfunction and acute renal failure. Modulation of oxidative stress is an effective therapeutic strategy for I/R injury. Perillyl alcohol (POH), a dietary monoterpene with antioxidant activity is found in a variety of plants. The study was carried out to investigate whether treatment of POH could reduce hypoxia/reoxygenation (H/R)-induced injury. H/R induced significant injury in HK-2 cells...
November 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28871532/visisens-technique-to-measure-internal-oxygen-and-respiration-in-barley-roots
#18
Aprajita Kumari, Kapuganti Jagadis Gupta
Respiration is vital for production of energy in plants where oxygen is essential for conducting respiration. Internal oxygen levels in plants depend on respiratory rates. Tissues such as underground roots experience hypoxia due to their isolation from atmospheric oxygen and their internal oxygen depends on tissue size and local oxygen in soil and rhizosphere. Here, we used the ViSisens imaging technique, in which an optical sensor foil (i.e., the planar optode) is attached surface of root. This sensor measures oxygen values from fluorescence...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28871315/laboratory-investigation-of-mineralization-of-refractory-nitrogen-from-sewage-treatment-plants
#19
Gaboury Benoit, Peng Wang
Laboratory studies were conducted and modeled to evaluate whether refractory organic nitrogen in tertiary-treated wastewater effluent could become bioavailable by conversion to mineral forms. Multiday incubations of effluent collected from the Branford and New Haven, Connecticut, waste water treatment plants (WWTP) revealed low but steady conversion of organic nitrogen to nitrate (NO3(-)). In Branford, the principal form of organic nitrogen was dissolved, and in New Haven it was particulate. Modeling suggested that in both the cases conversion to NO3(-) from organic forms occurred at several per cent per day, and appeared to happen via the intermediary NH4(+)...
December 2017: Environmental Management
https://www.readbyqxmd.com/read/28857271/nitric-oxide-is-essential-for-the-development-of-aerenchyma-in-wheat-roots-under-hypoxic-stress
#20
Aakanksha Wany, Aprajita Kumari, Kapuganti Jagadis Gupta
In response to flooding/waterlogging, plants develop various anatomical changes including the formation of lysigenous aerenchyma for the delivery of oxygen to roots. Under hypoxia, plants produce high levels of nitric oxide (NO) but the role of this molecule in plant-adaptive response to hypoxia is not known. Here, we investigated whether ethylene-induced aerenchyma requires hypoxia-induced NO. Under hypoxic conditions, wheat roots produced NO apparently via nitrate reductase and scavenging of NO led to a marked reduction in aerenchyma formation...
August 30, 2017: Plant, Cell & Environment
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